From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D70FC2D0DB for ; Fri, 24 Jan 2020 16:18:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E013220704 for ; Fri, 24 Jan 2020 16:18:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389494AbgAXQSY (ORCPT ); Fri, 24 Jan 2020 11:18:24 -0500 Received: from out30-43.freemail.mail.aliyun.com ([115.124.30.43]:60343 "EHLO out30-43.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387404AbgAXQSX (ORCPT ); Fri, 24 Jan 2020 11:18:23 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R231e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01f04455;MF=guoren@linux.alibaba.com;NM=1;PH=DS;RN=7;SR=0;TI=SMTPD_---0ToSJxNn_1579882700; Received: from localhost(mailfrom:guoren@linux.alibaba.com fp:SMTPD_---0ToSJxNn_1579882700) by smtp.aliyun-inc.com(127.0.0.1); Sat, 25 Jan 2020 00:18:20 +0800 From: Guo Ren To: linux-riscv@lists.infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, Guo Ren , Andrew Waterman , Palmer Dabbelt Subject: [PATCH] riscv: Use flush_icache_mm for flush_icache_user_range Date: Sat, 25 Jan 2020 00:18:10 +0800 Message-Id: <20200124161810.24322-1-guoren@linux.alibaba.com> X-Mailer: git-send-email 2.17.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The only call path is: __access_remote_vm -> copy_to_user_page -> flush_icache_user_range Seems it's ok to use flush_icache_mm instead of flush_icache_all and it could reduce flush_icache_all called on other harts. I think the patch is the fixup for the commit 08f051eda33b. Signed-off-by: Guo Ren Cc: Andrew Waterman Cc: Palmer Dabbelt --- arch/riscv/include/asm/cacheflush.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/include/asm/cacheflush.h b/arch/riscv/include/asm/cacheflush.h index b69aecbb36d3..26589623fd57 100644 --- a/arch/riscv/include/asm/cacheflush.h +++ b/arch/riscv/include/asm/cacheflush.h @@ -85,7 +85,7 @@ static inline void flush_dcache_page(struct page *page) * so instead we just flush the whole thing. */ #define flush_icache_range(start, end) flush_icache_all() -#define flush_icache_user_range(vma, pg, addr, len) flush_icache_all() +#define flush_icache_user_range(vma, pg, addr, len) flush_icache_mm(vma->vm_mm, 0) void dma_wbinv_range(unsigned long start, unsigned long end); void dma_wb_range(unsigned long start, unsigned long end); -- 2.17.0